Evaluation of dissolution characteristics of magnetite in an inorganic acidic solution for the PHWR system decontamination
0
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
A protective oxide layer forms on the material surfaces of a Nuclear Power Plant during operation due to high temperature. These oxides can host radionuclides, the activated corrosion products of fission products, resulting in decommissioning workers' exposure. These deposited oxides are iron oxides such as Fe3O4, Fe2O3 and mixed ferrites such as nickel ferrites, chromium ferrites, and cobalt ferrites. Developing a new chemical decontamination technology for domestic CANDU-type reactors is challenging due to variations in oxide compositions from different structural materials in a Pressurized Water Reactor (PWR) system. The Korea Atomic Energy Research Institute (KAERI) has already developed a chemical decontamination process for PWRs called ‘HyBRID’ (Hydrazine-Based Reductive metal Ion Decontamination) that does not use organic acids or organic chelating agents at all. As the first step to developing a new chemical decontamination technology for the Pressurized Heavy Water Reactor (PHWR) system, we investigated magnetite dissolution behaviors in various HyBRID inorganic acidic solutions to assess their applicability to the PHWR reactor system, which forms a thicker oxide film
Abstract
A protective oxide layer forms on the material surfaces of a Nuclear Power Plant during operation due to high temperature. These oxides can host radionuclides, the activated corrosion products of fission products, resulting in decommissioning workers' exposure. These deposited oxides are iron oxides such as Fe3O4, Fe2O3 and mixed ferrites such as nickel ferrites, chromium ferrites, and cobalt ferrites. Developing a new chemical decontamination technology for domestic CANDU-type reactors is challenging due to variations in oxide compositions from different structural materials in a Pressurized Water Reactor (PWR) system. The Korea Atomic Energy Research Institute (KAERI) has already developed a chemical decontamination process for PWRs called ‘HyBRID’ (Hydrazine-Based Reductive metal Ion Decontamination) that does not use organic acids or organic chelating agents at all. As the first step to developing a new chemical decontamination technology for the Pressurized Heavy Water Reactor (PHWR) system, we investigated magnetite dissolution behaviors in various HyBRID inorganic acidic solutions to assess their applicability to the PHWR reactor system, which forms a thicker oxide film
참고문헌 (22)
- M. Shailaja, "Mechanism of oxide scale removal during dilute chemical decontamination of carbon steel surfaces", J. Nucl. Sci. Technol, 30(6), pp.524~532 (1993)[DOI]
- Byung-Chul Lee, "Evaluation of reaction spontaneity for acidic and reductive dissolutions of corrosion metal oxides using HyBRID chemical decontamination", Journal of Radioanalytical and Nuclear Chemistry, 323(1), pp.91~103 (2019), Springer Science and Business Media LLC[DOI]
- Jibo Tan, "Corrosion fatigue model of austenitic stainless steels used in pressurized water reactor nuclear power plants", Journal of Nuclear Materials, 541, pp.152407~ (2020), Elsevier BV[DOI]
- 박근영, "Chemical Decontamination Design for NPP Decommissioning and Considerations on its Methodology", Journal of Nuclear Fuel Cycle and Waste Technology, 13(3), pp.187~199 (2015), 한국방사성폐기물학회[DOI]
- Sangsoo Han, "Decontamination of concrete waste from nuclear power plant decommissioning in South Korea", Annals of Nuclear Energy, 149, pp.107795~ (2020), Elsevier BV[DOI]
- Byung-Youn Min, "Separation of clean aggregates from contaminated concrete waste by thermal and mechanical treatment", Annals of Nuclear Energy, 37(1), pp.16~21 (2010), Elsevier BV[DOI]
- S. Menon, "Decommissioning of Nuclear Submarines: Waste Minimization by Recycling", Nuclear Submarine Decommissioning and Related Problems, pp.129~136 (1996), Springer Netherlands[DOI]
- E.B Borghi, "Reductive dissolution of magnetite by solutions containing EDTA and FeII", Journal of Colloid and Interface Science, 130(2), pp.299~310 (1989), Elsevier BV[DOI]
- S. J. Keny, "Radiation effects on the dissolution kinetics of magnetite and hematite in EDTA- and NTA-based dilute chemical decontamination formulations", Radiat. Phys. Chem, 72(4), pp.475~482 (2005)[DOI]
- Roland Gilbert, "Dissolution of Metal Oxides Accumulated in Nuclear Steam Generators: Study of Solutions Containing Organic Chelating Agents", Nuclear Technology, 68(3), pp.385~394 (1985), Informa UK Limited[DOI]
- S. O. Lee, "Study on the kinetics of iron oxide leaching by oxalic acid", Int. J. Miner. Process, 80(2-4), pp.144~152 (2006)[DOI]
- 김선병, "Magnetite Dissolution by Copper Catalyzed Reductive Decontamination", Journal of Nuclear Fuel Cycle and Waste Technology, 16(4), pp.421~429 (2018), 한국방사성폐기물학회[DOI]
- 이병철, "Equilibrium calculations for HyBRID decontamination of magnetite: Effect of raw amount of CuSO4 on Cu2O formation", Nuclear Engineering and Technology, 52(11), pp.2543~2551 (2020), 한국원자력학회
- Art F White, "Electrochemistry and dissolution kinetics of magnetite and ilmenite", Geochimica et Cosmochimica Acta, 58(8), pp.1859~1875 (1994), Elsevier BV[DOI]
- J.A. Harrison, "The oxidation of hydrazine on platinum in acid solution", Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 28(1), pp.131~138 (1970), Elsevier BV[DOI]
- L. C. Rockombeny, "Electrochemical oxidation of oxalic acid and hydrazinium nitrate on platinum in nitric acid media", Electrochim. Acta, 66, pp.230~238 (2012)[DOI]
- Development of Advanced Decontamination Technology for Nuclear Facilities, "W. K. Choi", KNS, ~, pp.KAERI (2015), RR–3964[DOI]
- H. Won, "Dissolution of magnetite by the hydrazine base solution", Proceedings of the KNS 2013 Spring Meeting, pp.1~ (2013), KNS
- J. Kabai, "Determination of specific activation energies of metal oxides and metal oxide hydrates by measurement of the rate of dissolution", Acta Chim. Acad. Sci. Hungar, 78, pp.57~73 (1973)
- R. Salmimies, "Acidic acid dissolution of magnetite in mixtures of oxalic and sulfuric acid", Hydrometallurgy, 163, pp.91~98 (2016)
- W. Weibull, "A statistical distribution function of wide applicability", J. Appl. Mech, 18(3), pp.293~297 (1951)[DOI]
- Thomas Wilson Swaddle, "Kinetics of the magnetite–maghemite–hematite transformation, with special reference to hydrothermal systems", Canadian Journal of Chemistry, 58(17), pp.1763~1772 (1980), Canadian Science Publishing[DOI]